Home >> Land Rover >> 2017 >> Range Rover Sport HSE Dynamic >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Telematics Control Module (TCU) -- Range Rover Sport/L494 >> Diagnostic Trouble Code Index DTC: Telematics Control Module (TCU) >> Description And Operation >> DTC B1A01-12: Speaker #1 - Circuit short to battery >> Possible Causes